Next in our "gma" "heat index," chaz bono is making headlines for his brand-new look. The "dancing with the stars" alum is showing off his dramatic weight loss over the weekend. He didn't lose it over the weekend. He's showing it off this weekend. He shed 60 pounds in 5 months, as abc's diana perez has the story. Chaz. Reporter: Looking better than ever, over the weekend, chaz bono stepped o at the 2013 g.L.A.A.D. Media awards in los angeles. Down 60 pounds and counting. It's very clear when you look at chaz, he looks heldier. He looks happier. More self-confident. Reporter: Look at the astonishing before and after. The 44-year-old taking to twitter to celebrate with his fans. I hit the 60-pound weight loss mark this week and feeling really good. Growing up the child of two famous parents, chaz has struggled with his weight for some time. I think after my dad's side of the family. My mom's mom isskinny. But on my dad's side, it's really different. Reporter: How did the former "dancing with the stars" contestant, who once hit the scales at 250 pounds, do it? I'm here with chaz bono, who has decided to come on "the doctors" to get help here, to lose weight. Reporter: By taking medical tests. Are you sleeping well? Reporter: And facing scary wake-up calls. Chaz is one big risk factor waiting to get into a bad situation. Reporter: Chaz overhauled his life, changing his workout regime to dancing and mixed martial arts and rethinking his diet. We did go with meals that were high protein and low in carbohydrates. Focus was on clean, whole, unprocessed eating, which is key for lifestyle. Reporter: And now, take a look at the results. Wow. I feel great. Really good. I'm kind of not used to everything yet. Reporter: Though, he's still getting used to his new svelte figure, the sky's the limit for the new chaz. What's next? I think that will be the next transition we make, finding love for chaz. Reporter: For "good morning america," diana perez, abc news, new york.

This transcript has been automatically generated and may not be 100% accurate.

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